Auxiliary heater



Jaun. 2, 11923. LMlU A. ZACHARIAS. AuxlLlARY HEATER.

FILED JUNE 8.1921.

` tion of the invention,

yequipped with a valve AUGUST ZAC i .i

aaai@ ermee. 1

eraan? 12, OF MINNEAPOLIS, MINNESOT.

AUXILIABY HEATER.

' Application led June 8,

To all whom it may coiwem: f

Be it known that I, AUGUST ZACHARIAS, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Auxiliary Heaters; and I do hereby declare the following to be a full, clear, and exact descripsuch as will enable others skilled in the art to which it appertains to make anduse the same.

My present invention is directed to heating apparatus and more particularly lto steam and hot water heating Asystems for fiat buildings, apartment houses and other dwellings, and provides an improved auxiliary heating device incorporated therein in a novel manner.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referrlng to the drawings:

Fig. 1 is a view partly in vertical section and partly in elevation, some parts being broken away, illustrating my invention as` applied in a hot water or steam-heating system; and

Fig. 2 vis a fragmentary section on the line 2 2 of Fig. 1. y

The numeral 3 indicates a hot water or steam boiler ofthe usual or any suitable construction, and the numeral 4 indicates a radiator located above the floor 5. The top of the boiler 3 is connected to the radiator 4 by .a hot water delivery pipe 6 preferably '1. From the radiator 4 is extended a return pipe 9, which usually would be connected directly back to the boiler, but, in accordance with this invention, is indirectly connected thereto, in a manner that will presently appear, and has a valve 8, l v

The numeral 10 indicates a smoke box or secondary combustion chamber preferably of sheet metal and, as shown, of rectangular form, having in its bottom a hopper-like ange. 11 that delivers ,to a removable drawer or catch an 12. This housing 10 is connected to the flame or smoke outlet passage of the boiler by a smoke pipe`\13, which, as shown, has the customary check damper 14. Said housing 10 is connected to a ue or chimney 15 by one or more smoke pipes and, as shown, is so connected by two smoke pipes-16 and 17, the former of which leads from the upper portion of one side of 1921. Serial No. 475,884.

they may rbe independently opened and closed.

Within the upper .portion of the housing 10 is a tubular auxiliary water heater, preferably and as shown made up of a plurality of manifold pipes 2O and headers 2l, to which they are connected at their ends. The return pipe 9, already noted, is connected by a coupling 22'to the lower header 21 and the upper header 21 is connected by a secondary return pipe 23 to the lower portion of the boiler 3. Thus, the auxiliary heater is vinterposed within the complete return pipe 9-23. The numeral24 indicates a pipe'equipped witha normally closed valve 25, but from which, when desired, warm or hot water may be drawn oli from the auxiliary heater. This any suitable point in the building.

e numeral *26 indicates a hot water tank, which, as shown, is horizontally' disposed and supported from the Hoor structure 5 by hanger straps 2T. One end of the tank 26 is connected to the steam pipe 6 by a pipe 28 shown as equipped with a normally open globe valve 29, and the -other end of said tank is connected by a pipe 30 to the coupling 22 and, hence, with the auxiliary heater 20*21.

Thenumeral :3l-indicates a water supply pipe, which leads from a suitable source of supply such as a city water main or an elevated supply tank, and is provided with a normally closed valve 32. The numeral 33 indicates a hot water draw-ofi pipe, which is equipped with a valve 34 and leads to any suitable pointor points where a supply of hot water is desired.

l The ames or hot gases 'from `the combustion chamber of the boiler will pass through the smoke pipe 13 into the housing or secondary combustion chamber 10 an'd thence out through one or the other or both of the smoke pipes 16 and 17. Because of the large cross section of said housing. the smoke, in

moving therethrough and turning upward, Y

will move very slowly and the s oot or incornplete products of combustion will be precipi- -tated rto the bottom of the housing and, as

shown, caught in the drawer onpan 12. Thus, smoke, to a large extent, 1s eliminated. The act-ion of the hot` gases or flames on 25, be opened, then the hot water from theI boiler Will flow upward through the pipe t6 in'part to the radiator 4 and in part through the pipe 28 to the hot water tank 26; and the water will return to the auxiliary heater,

from the radiator 4 through the pipe 9 and from the tank 26 through the pipe 30. The Water will, of course, be brought to quite a high degree oftemperaturel in passing through the auxiliary heater T-21 and this heater Water will pass out through the pipe 23 to the boiler, where it will be heated to a still higher degree of temperature and thence delivered to the radiator and radiators vand to the hot Water tank.

If the valve 8 be closed, the circulation of water will be entirely through the hot water tank 26. If the valve'29 be closed and the valve 8 opened, circulation will be through the radiator or` radiators and not through the hot water tank. If hot water is desired, it may be drawn off by opening the valve 34 in the pipe 33, or it may be drawn off by opening the valve in the pipe 24.

1A When the `supply of water is from a yield.

. ing source such as a city'water main or eleing plant is herein used in a broad sense to include such structures.

What I claim is: ,In a heating plant, the combination with la main boiler and a casing connected to the smoke pipe thereof and affording a secondary combustion chamber, of a tubular auxiliary water heater located in said secondary combustion chamber above the smoke pipe connection thereto from said boiler, said casing having a'smoke pipe leading from the upperrportion thereof, a radiator, a hot Water tank, return pipes connecting said radiator and hot water tank to the'lower portion of said auxiliary heater, a secondary return pipe leading from the upper portion of said auxiliary heater to the lower portion `of said boiler, a hot water delivery pipe leading from the upper portion of said boiler to said radiator and having a branch n pipe leading to said hot water tank, a water pressure `supply pipe leading to said f hot water tank and supplying water to theheating system, and a valve-equipped hot water draw-off pipe leading from the upper portion of said tank.

In testimony whereof I afiix my signature.'

- AUGUST. ZAC'HARIAS. 

